[postgis-devel] [postgis-users] Infinite loop in st_intersects - because of incorrect data out of st_transform?

Mark Cave-Ayland mark.cave-ayland at siriusit.co.uk
Thu May 12 09:47:13 PDT 2011

On 12/05/11 17:44, Sandro Santilli wrote:

>> What's the use case for Inf coordinates? Or NaN coordinates? There's
>> no real-world ones, are there? and once we're painted into that corner
>> computationally I'm not sure how we get back out.
> It is indeed hard to figure how to get out of there, but my point
> is refusing to output such things would prevent us from backing up
> the data and refusing them in input would prevent us from restoring
> backups. Once they are in, somehow, you can't stop accepting them
> and outputting them.

Yes - we need to figure out all the entry/exit points where these things 
could get in and stop them there. So that would include the input/output 
routines and the GEOS/PROJ.4 routines too.



Mark Cave-Ayland - Senior Technical Architect
PostgreSQL - PostGIS
Sirius Corporation plc - control through freedom
t: +44 870 608 0063

Sirius Labs: http://www.siriusit.co.uk/labs

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